How many students in the school are not members

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The school has 800 students with 20 students on the gymnastic team and 10 students on the chess team (including 3 students who are on both teams). How many students in the school are not members of either the gymnastic team or the chess team. How many students in the school are not members of either the gymnastic team or the chess team?

Reference no: EM13197958

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